# Copyright (c) 2017, Intel Corporation
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:
#
#     * Redistributions of source code must retain the above copyright notice,
#       this list of conditions and the following disclaimer.
#     * Redistributions in binary form must reproduce the above copyright
#       notice, this list of conditions and the following disclaimer in the
#       documentation and/or other materials provided with the distribution.
#     * Neither the name of Intel Corporation nor the names of its contributors
#       may be used to endorse or promote products derived from this software
#       without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
# DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
# SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

import os
import sys
from os.path import join

import Cython.Build
import numpy
from setuptools import Extension, setup

sys.path.insert(0, os.path.dirname(__file__))  # Ensures local imports work
from _vendored.conv_template import process_file as process_c_file  # noqa: E402


def extensions():
    mkl_root = os.environ.get("MKLROOT", None)
    if mkl_root:
        mkl_info = {
            "include_dirs": [join(mkl_root, "include")],
            "library_dirs": [
                join(mkl_root, "lib"),
                join(mkl_root, "lib", "intel64"),
            ],
            "libraries": ["mkl_rt"],
        }
    else:
        raise ValueError("MKLROOT environment variable not set.")

    mkl_include_dirs = mkl_info.get("include_dirs", [])
    mkl_library_dirs = mkl_info.get("library_dirs", [])
    mkl_libraries = mkl_info.get("libraries", ["mkl_rt"])

    mklfft_templ = join("mkl_fft", "src", "mklfft.c.src")
    processed_mklfft_fn = join("mkl_fft", "src", "mklfft.c")
    src_processed = process_c_file(mklfft_templ)

    with open(processed_mklfft_fn, "w") as fid:
        fid.write(src_processed)

    return [
        Extension(
            "mkl_fft._pydfti",
            sources=[
                join("mkl_fft", "_pydfti.pyx"),
                join("mkl_fft", "src", "mklfft.c"),
            ],
            depends=[
                join("mkl_fft", "src", "mklfft.h"),
                join("mkl_fft", "src", "multi_iter.h"),
            ],
            include_dirs=[join("mkl_fft", "src"), numpy.get_include()]
            + mkl_include_dirs,
            libraries=mkl_libraries,
            library_dirs=mkl_library_dirs,
            extra_compile_args=[
                "-DNDEBUG",
                # '-ggdb', '-O0', '-Wall', '-Wextra', '-DDEBUG',
            ],
            define_macros=[
                ("NPY_NO_DEPRECATED_API", None),
                ("PY_ARRAY_UNIQUE_SYMBOL", "mkl_fft_ext"),
            ],
        )
    ]


setup(
    cmdclass={"build_ext": Cython.Build.build_ext},
    ext_modules=extensions(),
    zip_safe=False,
)
